Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter
    Offline

    1
    ReputationRep:
    Could somone please do show me how a question like this is done??

    These are the measurements form my experiment:
    Start: 23degreesC (water).
    199.6g ethanol
    30ml of water

    End: 70degrees
    199.06g of ethanol.

    Could somone pleasee show me how to figure out the energy absorbed by the water?? (i reall have no idea) o:

    Thanks!
    • Community Assistant
    • Study Helper
    Offline

    15
    ReputationRep:
    Community Assistant
    Study Helper
    (Original post by Peachesishere)
    Could somone please do show me how a question like this is done??

    These are the measurements form my experiment:
    Start: 23degreesC (water).
    199.6g ethanol
    30ml of water

    End: 70degrees
    199.06g of ethanol.

    Could somone pleasee show me how to figure out the energy absorbed by the water?? (i reall have no idea) o:

    Thanks!
    The energy absorbed by the water (ΔE) = mass(of water being heated) x specific heat capacity x temperature change

    ΔE = mcΔT

    To calculate per mole of ethanol divide the value of ΔE by the number of moles of ethanol burned
    • Thread Starter
    Offline

    1
    ReputationRep:
    (Original post by charco)
    The energy absorbed by the water (ΔE) = mass(of water being heated) x specific heat capacity x temperature change

    ΔE = mcΔT

    To calculate per mole of ethanol divide the value of ΔE by the number of moles of ethanol burned
    Ohhh ok thankyouu
    Offline

    2
    ReputationRep:
    q=mct (change in t)

    m=mass
    c=heat capacity
 
 
 
Poll
Do you agree with the PM's proposal to cut tuition fees for some courses?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.